5DMarkII safety shift problem?

Hi Everyone,

Just recently noticed that it seems that my safety shift function doesnt work in Av mode, but it does in Tv.
In other words when I am setting the aperture manually in Av mode, it supposed to change automatically if my safety shift is enabled, in case I havebt set the f-stop correctly and the image is going to be over/under-exposed.

It works in Tv mode, if the shutter speed is set wrongly, the camera overrides it automatically to get the correct exposure.So I am expecting the same thing to happen in Av..
Does anyone know how else can I check it other than setting a wrong aperture and seeing if camera tries to correct it?

Set ISO to 3200, fast max. aperture (e.g. f/2.0) depending on lens used, and try to take picture outdoor in bright sunlight. The camera will set shutter to 1/8000s and safety shift should close aperture to achieve the correct exposure (e.g. f/5.6).

Safety Shift doesn't work the same in the two modes, because there is a wide range of possible shutter speeds but the average lens has only 8 - 10 f-stops. This means that in Tv the automation can hit the limit of possible apertures much more quickly than in Av where it can go all the way up to 1/8000 or down to 30 seconds before it has to invoke Safety Shift.

Thanks Tiha - it seemed to work!
Thanks Tzalman- for the explanation!